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How wonderful the application of Carbon Nanotubes

Time:2018-07-29 Views:500

1. Carbon nanotube anti-static and anti-corrosion coating

Nano anti-static and anti-corrosion coating with superior cost-effective, the price is only one-half of similar foreign products, highly competitive market. Five key technologies of this project:

1, the use of carbon nanotubes as the conductive function, to prepare the conductive properties of excellent paint.

2, carbon nanotubes in the epoxy resin dispersion technology

3, nano anti-static and anti-corrosion coating the optimal formula

4, nano anti-static and anti-corrosion coating for curing system

5, nano anti-static and anti-corrosion coating construction technology.

Two innovations:

1, carbon nanotubes excellent electrical conductivity and chemical stability, so that the system of nano-anti-static metal anti-corrosion coatings to meet GB6950-2001 national standards under the various technical indicators.

2, in the curing system, both contain good curing properties of epoxy amine compounds, but also with the curing reaction with the hydroxyl group, a better solution to the coating both water and oil; both anti- Static, and corrosion; both wear and impact resistance.

Products to adapt to the scope

Various types of storage tanks, tubing, oil extraction equipment, oil refining equipment

Gas facilities and equipment, aerospace (airport) facilities and equipment

Electronic equipment, tankers, cars

Ship ships, military equipment

Floor runway, large-scale precision instrument plant

2. Carbon nanotubes as electrode materials

  (1) lithium-ion is anode material of battery. The interlayer spacing of CNTs is 0.34nm, which is slightly larger than the interlayer spacing of graphite, which is favorable for the insertion and migration of Li +. The special cylindrical configuration can not only insert Li + from the outer wall and inner wall, but also Thereby preventing damage of the negative electrode material due to peeling of the graphite layer caused by the solvated Li + ion implantation. CNTs doped graphite can improve the conductivity of graphite anode, eliminating polarization. Experiments show that CNTs can be used as an additive or as a negative electrode material for lithium ion batteries alone can significantly improve the capacity of the anode material and stability of embedded Li +.

   (2) electric double layer capacitor pole material. Electric double layer electricity is also an energy storage device. In addition to the smaller capacity (usually 1% of nickel-cadmium batteries), the electric double-layer capacitor other comprehensive performance is much better than the secondary battery, such as high current charge and discharge, almost no charge and discharge over-voltage, cycle life Up to thousands of times, wide temperature range. Electric double-layer capacitors in audio-video equipment, tuners, telephones and fax machines and other communications equipment and a variety of household appliances has been widely used.

    As the electric double layer capacitor electrode material, the material required high crystallinity, good conductivity, specific surface area, pore size concentrated in a certain range. At present, porous carbon is generally used as the electrode material, not only the pore distribution is wide (less than 30% of the pores contributing to energy storage), and the crystallinity is low and the conductivity is poor, resulting in a small capacity. The absence of suitable materials is an important reason for limiting the use of electric double layer capacitors in a wider range.

      Carbon nanotubes have the advantages of large specific surface area, high crystallinity, good conductivity, and small pore size can be controlled by the synthesis process, which may become an ideal electrode material. Hyperion Catalytic International Co., Ltd. reported that carbon nanotubes prepared by catalytic pyrolysis (tube outer diameter of about 8nm) as the electrode material, with 38wt% H2SO4 as the electrolyte, can get more than 113F / g of capacitance, than the current porous carbon Capacitance more than 2 times higher. The capacitance of carbon nanotube electrode was 89F / g. The electric double layer capacitor was made of CNTs with an outer diameter of 30nm and PVDF as the binder, and 1MN (C2H5) 4BF4 / PC as the electrolyte.

      At present, carbon nanotubes as the electrode material of the electric double layer capacitor, the weight ratio of power has more than 8kw / kg, making it possible as the electric vehicle starting power supply.

3. Carbon nanotubes act as catalyst carriers

      The specific surface area and surface atomic ratio of the nanomaterials are large (about 50% of the total number of atoms), which make the electronic structure and crystal structure of the nanomaterials change obviously and show special electronic effect and surface effect. Such as the gas through the carbon nanotubes diffusion rate of thousands of times by conventional catalyst particles, supported catalyst greatly enhance the activity and selectivity of the catalyst.

      As a new member of nanomaterials, carbon nanotubes have special structure and surface properties, excellent hydrogen storage capacity and conductivity of metals and semiconductors, which make them have great potential in hydrogenation, dehydrogenation and selective catalysis reactions. Application potential. Once the carbon nanotubes have been applied in catalysis, it is expected to greatly improve the activity and selectivity of the reaction, resulting in huge economic benefits.

4. Carbon nanotubes as microwave absorbers

      Because of their special structure and dielectric properties, carbon nanotubes (CNTs) exhibit strong broadband microwave absorption properties, and they also have the characteristics of light weight, adjustable conductivity, high temperature oxidation resistance and good stability, Is a promising ideal microwave absorber, there may be used for stealth materials, electromagnetic shielding materials or darkroom absorbing materials. We should study the introduction of carbon nanotubes on its performance as a microwave absorbent, microwave absorbent for carbon nanotubes laid the foundation for practical application.